You can use strings to represent relative times: &filter[fields][create_ts]=[NOW-5HOURS%20TO%20NOW] or exact timestamps: &filter[fields][create_ts]=[2011-06-

You can use strings to represent relative times: &filter[fields][create_ts]=[NOW-5HOURS%20TO%20NOW] or exact timestamps: &filter[fields][create_ts]=[2011-06-01T05:00:00.00Z%20TO%202011-06-02T07:00:00.00Z] or both: &filter[fields][create_ts]=[2011-06-01T05:00:00.00Z%20TO%20NOW]